BNP and its associate bodies have taken various programmes to mark the day.
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As part of the programmes, BNP will arrange a doa mahfil at its Nayapaltan central office at 10:30am, said a party press release on Saturday.
BNP leaders and activists, led by its secretary general Mirza Fakhrul Islam Alamgir, will offer fateha at Koko’s grave at Banani Graveyard in the capital at about 10am.
Besides, cooked food will be distributed at different madrasas and orphanages at 12:30pm on the occasion.
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Another doa mahfil will be held at BNP chairperson’s Gulshan office after Asr prayers.
A discussion on the life and work of Koko will be arranged at Dhaka Reporters’ Unity (DRU) on Tuesday.
Different associate and professional bodies of BNP and its city and district units will also observe the day through various programmes, including discussions and prayer sessions, across the country.
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On January 24, 2015, Koko died of a cardiac arrest at the age of 45 at a rented house in Malaysia.
His body was brought back home on January 27 and buried at Banani Graveyard.